Chapter 251: Half circle around the earth

　　 What is the speed of Mach 5?
　　 is 6000 kilometers per hour!
　　 One minute is 102 kilometers!
　　 10 minutes is 1020 kilometers!
　　 How far is the base in Okinawa from China? Guam is not far away! Only three thousand kilometers.
　　You can get to Guam in half an hour!
　　 You said, what can the garrison do if a large number of fighters strike?
　　Half an hour, can you react?
Danger!
Too dangerous!
　　 is exactly the rhythm of the disaster!
　　 This is still a fighter with no stealth capability, and it can give an early warning.
　　 if it is invisible
　　 Then there is no way to imagine.
　　 can't do it!
　　 This thing is too dangerous!
　　 There must be countermeasures.
　　 Otherwise, the entire Western Pacific will be shrouded in the shadow of Mach 5 fighters.
　　 I think of the old MiG 25 shadows
　　 Could it be said that the ancient Jianba has been restored to its glory?
　　 "Li Tonghe, how is your situation?"
　　 "Good condition."
　　 "Are there blackouts?"
"no."
　　 "Is there any red vision?"
"no."
　　 "How much is the current overload?"
　　 "72."
　　 "Please keep the cruising speed. Do not increase the speed."
　　 "Understand."
　　 Liu Zhenhua waved to let Wang Bu'an come over.
　　 The test pilot has no black vision or red vision, indicating that he is in good condition. Explain that the overload can be withstood.
　　The so-called black vision means that the load is too heavy, the blood supply is insufficient, and the eyes are black.
　　 The so-called red vision means that the load is too congested in front of the eyes, and everything looks red.
　　 Whether it is black vision or red vision, it is a danger signal.
　　 If it does appear, the speed must be reduced immediately and then return home.
　　 "Is it still speeding up?" Liu Zhenhua asked.
　　 "You decide." Wang Bu'an answered cautiously.
"Next time."
"it is good."
　　 Wang Bu'an has no opinion.
　　Sometimes, there are many aspects to consider.
　　 The first plane flew at a speed of Mach 5. It was enough to shock the world.
　　 If you throw out all your hole cards now and fly at a speed of Mach 8, it would be a waste of shocking opportunity.
　　 In the former Soviet Union, there was a pole vaulter who lifted 1 cm each time. Break the world record every time. 125 can also take this approach.
　　 When the time is right, fly out at speeds of Mach 6, Mach 7, and Mach 8, to achieve the purpose of deterring the strong enemy.
　　Technology serves the military. The military also serves politics.
　　 "The leadership decided to give you a special credit once." Liu Zhenhua said solemnly.
　　 "Can it be exchanged for cash?" Wang Bu'an whispered.
　　 "No."
　　 "Forget it."
　　 "But it can be included in the funding of the 220 Institute."
　　 "What do you mean?"
　　 "The 220 Institute will receive two billion scientific research funding."
"real or fake?"
　　 "Do you think the leader will be joking?"
"Oh."
　　 Wang Bu'an touched his chin.
　　 Seems to be trapped again?
　　 Ginger is still old and spicy. The leaders are all masters.
　　 Two billion funding looks very attractive. In fact, it is equivalent to firmly binding oneself to the chariot of the 220 Institute.
　　 You have to do things if you take the money!
　　 Even if Wang Bu'an took the money and didn't do anything, he felt sorry for himself.
　　 With so much money, if you don’t make a little achievement, are you worthy of the money?
Do you want?
of course yes.
　　 Can you not get the money?
　　 Otherwise, you pay yourself to pay the staff!
　　 There is no such reason.
　　 Unit 1 is still hovering in the sky.
　　 Its speed is too fast, the radius of the circling is very large, it must be air control.
　　 For the sake of safety, all civil aviation passing through this airspace has been diverted.
　　 One hour passed, and Unit One continued to circle.
　　 Two hours passed, and Unit One continued to circle.
　　 This is to test the durability of the engine. Need to fly continuously for several hours.
　　 Originally, if it were an ordinary test, Li Tonghe should have landed. However, the current parameters and conditions are good, and I don't mind staying in the sky for a long time.
　　Air crash does not mean that it happened as soon as it happened. There are certain signs. If you find something wrong, land immediately.
　　 The current altitude is 15,000 meters, and it is not difficult to land safely.
　　 As long as it is not for extreme conditions such as stall and spin, pilots can skydive.
　　 "Let’s do some activities, everyone."
　　 "Activate your muscles and bones."
　　 The people inside the tower all came out one after another.
　　 At this time, the first machine has no other test tasks, only a monotonous hovering, and there is no need for onlookers.
　　 Wang Bu'an also came out of the tower. To the restroom. Let it go.
　　 Looking around, I feel so bored.
　　 There is no acquaintance.
　　 didn't know where the old guys ran to hide. I didn't see them appearing on the tower.
　　 It’s better to go back to the tower. Air conditioning is awesome.
　　 At this time, the first plane continued to cruise.
The monitoring data sent back by 　　 showed that the temperature of the aircraft's surface skin was already above 450 degrees.
　　 If it is an aluminum skin, it is probably already melting.
　　 Fortunately, it is high-performance stainless steel.
　　The heat barrier is indeed a roadblock! Limits the speed of fighter jets in many countries.
　　 "Keep the current speed."
　　 "It is strictly forbidden to continue speeding up."
　　 The tower issued cautious orders from time to time.
　　 This is to prevent Li Tonghe from subconsciously speeding up. If you are not careful, you may break through Mach 6.
　　 Monitoring data shows that the current engine speed is only 6,000 rpm. There is still a certain distance from the maximum speed of 8000 rpm.
　　 In case Li Tonghe sees Lie's heart, it is easy to violate instructions involuntarily and accelerate the plane to Mach 6.
　　 What will happen to Mach 6? Wang Bu'an doesn't think so.
　　 However, Liu Zhenhua and others are a little worried.
　　 After all, this speed is really amazing.
　　 Before the test flight, the maximum speed given by Wang Bu'an was Mach 8. This is the limit speed.
　　 The limit speed is not a safe speed.
　　 The safe speed is generally about two-thirds of the limit speed.
　　 If it is cruising speed, it is best to maintain about one-third of the limit speed.
　　 For example, the maximum speed of 20 can reach Mach 23. But the cruising speed is better to maintain Mach 08. Safe and economical.
　　 Like the No. 1 machine, it is not scientific to maintain a cruise speed of Mach 5.
　　 However, considering the structure of the 125 engine, it’s not a problem.
　　 Mach 5 is a relatively safe speed.
　　 Actually, 125 has enough thrust.
　　 What is its speed limit?
　　 Including Wang Bu'an, there is no accurate data.
　　 You must know that the speed of different aircraft is completely different.
　　 Even if it is the same model of aircraft, it is difficult to determine if the weights carried are different.
　　Why do you say that the test flight data is very precious?
　　 is a lot of first-hand information.
　　 Any theoretical calculation is better than flying on the ground.
　　 It seems that the first plane has been flying in the sky for more than three hours, and the relevant data has been improved a lot.
　　 At least, it has been fully verified that Mach 5 is a safe speed.
　　 In the future, equipped with 125 fighter jets, it will be able to fly out of Mach 5 easily.
　　 "Unit 1, return home."
　　 "Unit 1 understands. Return immediately."
　　 The tower issued an order.
　　 Unit 1 began to enter the return home procedure.
　　 The speed keeps decreasing.
　　The height keeps decreasing.
　　 Soon after, it appeared in the telescope.
　　 Then, it looked like a strong cheetah and landed heavily on the runway. The deceleration parachute opened, and after sliding for a certain distance, it slowly stopped.
　　All the testers immediately swarmed up to carry out various important data detection and migration.
　　 There are also special testers looking for scars on the exterior of the aircraft.
　　 Liu Zhenhua and Wang Buyan also came to the edge of the runway.
　　 Li Tonghe was coming out of the cabin.
　　 "How do you feel!" Liu Zhenhua asked with a smile on his face.
　　 "Very good." Li Tonghe replied loudly.
　　 "Very good."
　　 "Thank you."
　　 Li Tonghe's mental state is very good.
　　He cruised in the sky for four hours and flew a full 20,000 kilometers, and he felt very energetic.
　　 The absence of any malfunctions in the aircraft is the greatest encouragement.
　　 He was picked up immediately to fill out the flight test report.
　　 It is estimated that this test flight report will be collected by the Aviation Museum in the future.
　　 The first flight test report with a speed exceeding Mach 5.
　　 The first test flight report with a flight mileage of more than 20,000 kilometers.
　　 No matter which one it is, I am proud of it.
　　Unconsciously, the first plane has already flown more than 20,000 kilometers, which is almost equal to a half circle around the earth.
　　 Liu Zhenhua carefully observed the fuselage.
　　 He carefully circled the fuselage several times.
　　 No obvious scars were found.
　　 Touch by hand
　　 is very hot.
　　 With a light touch of your finger, you must remove it.
　　Inspection data shows that the surface temperature of the stainless steel plate is still more than 200 degrees.
　　 It is estimated that within three hours, there is no way to return to normal temperature.
　　 However, this temperature is nothing compared to the engine nozzle.
　　 No one dared to approach the nozzle of the engine.
　　 That is a high temperature of thousands of degrees.
　　 Don't say it's touching, even if it's close, I feel the heat wave pressing.
　　According to the test data, the maximum temperature of the tail flame has reached an astonishing 3000 degrees. It can destroy all metals.
　　 Now that the plane has landed, the temperature of the jet is still above 1,000 degrees.
　　 It is estimated that it will take six hours to return to normal temperature.
　　 However, it has no chance to return to normal temperature.
　　 Because, the second test will start soon.
　　 The body parts are normal.
　　 The avionics system is normal.
　　The power system is normal.
　　The second test can be carried out~EbookFREE.me~What is the second test?
　　 Flying height.
　　 Impact the maximum ceiling.
　　 "Didn't it just landed? Why is it taking off again? Doesn't it need to be overhauled?" Han Xuewei asked worriedly.
　　 "No problem." Wang Bu'an said lightly.
　　 "Really?"
"of course."
　　 "Kong Lingwei!"
　　 "Here!"
"set off!"
　　 Class 3 test pilot Kong Lingwei entered the cockpit.
　　 Unit 1 continues to start.
　　 Flame jet.
　　 Everyone has been hiding far away.
　　 Otherwise, the blast of flames can melt people directly.
　　 "The greatest afterburner!"
　　 "The shortest distance to take off."
　　 The tower issued an order.
　　 The plume jet of the first unit is even more violent.
　　 It looks like a frightened cheetah, rushing forward frantically.
　　 Within 130 meters, the landing gear left the ground.
　　 This is exactly the rhythm of carrier-based aircraft!
　　130 meters, enough to take off on an aircraft carrier.
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